Merge pull request #2075 from kateinoigakukun/katei/add-system-exception

Add `exception` keyword argument to `Kernel#system`

Author: soutaro

core/kernel.rbs

@@ -2056,8 +2056,8 @@ module Kernel : BasicObject
   #
   # Raises an exception if the new process could not execute.
   #
-  def self?.system: (String command, *String args, ?unsetenv_others: boolish, ?pgroup: true | Integer, ?umask: Integer, ?in: redirect_fd, ?out: redirect_fd, ?err: redirect_fd, ?close_others: boolish, ?chdir: String) -> (NilClass | FalseClass | TrueClass)
-                  | (Hash[string, string?] env, String command, *String args, ?unsetenv_others: boolish, ?pgroup: true | Integer, ?umask: Integer, ?in: redirect_fd, ?out: redirect_fd, ?err: redirect_fd, ?close_others: boolish, ?chdir: String) -> (NilClass | FalseClass | TrueClass)
+  def self?.system: (String command, *String args, ?unsetenv_others: boolish, ?pgroup: true | Integer, ?umask: Integer, ?in: redirect_fd, ?out: redirect_fd, ?err: redirect_fd, ?close_others: boolish, ?chdir: String, ?exception: bool) -> (NilClass | FalseClass | TrueClass)
+                  | (Hash[string, string?] env, String command, *String args, ?unsetenv_others: boolish, ?pgroup: true | Integer, ?umask: Integer, ?in: redirect_fd, ?out: redirect_fd, ?err: redirect_fd, ?close_others: boolish, ?chdir: String, ?exception: bool) -> (NilClass | FalseClass | TrueClass)
 
   # <!--
   #   rdoc-file=object.c

test/stdlib/Kernel_test.rb

@@ -523,4 +523,11 @@ def test_initialize_dup
     assert_send_type  '(KernelInstanceTest::JustKernel) -> KernelInstanceTest::JustKernel',
                       JustKernel.allocate, :initialize_dup, OBJ
   end
+
+  def test_system
+    with_bool do |exception|
+      assert_send_type '(String, exception: bool) -> bool',
+                       Kernel, :system, ":", exception: exception
+    end
+  end
 end